65803 Didymos (1996 GT)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3832284188 ± 6.51e-10
Semi-major axis (a)1.6425644037 AU ± 4.60e-11
Inclination (i)3.41407431° ± 1.19e-07
Long. of Asc. Node (Ω)72.98445790° ± 2.27e-06
Arg. of Perihelion (ω)319.58991656° ± 2.29e-06
Mean Anomaly (M)167.22107700° ± 1.96e-07
Mean Motion (n)0.4681970422°/day ± 1.97e-11
Perihelion dist (q)1.01308704 AU ± 1.07e-09
Aphelion dist (Q)2.27204176 AU ± 1.07e-09
Orbital Period2.10515273 yr ± 8.85e-11
Physical Parameters
H (abs. magnitude)18.11
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.192″
Uncertainty0
Orbit TypeApollo
MOID0.038973 AU
Observations Used5293
Radar Obs Used9
Oppositions14
Arc Total1996-2025
First Observation Used1996-04-11
Last Observation Used2025-02-27
Observations (6092)
Date Type RA Dec Mag Band Observatory
2022-09-03 21:35:50 C 00 13 54.19 -31 08 45.4 Y 190
2022-09-03 21:36:53 C 00 13 54.37 -31 08 46.5 Y 190
2022-09-03 21:37:56 C 00 13 54.53 -31 08 47.0 Y 190
2022-09-03 21:39:00 C 00 13 54.76 -31 08 48.4 Y 190
2022-09-03 21:40:03 C 00 13 54.98 -31 08 49.3 Y 190
2022-09-03 21:41:07 C 00 13 55.12 -31 08 50.4 Y 190
2022-09-03 21:42:21 C 00 13 55.32 -31 08 51.3 Y 190
2022-09-03 21:43:24 C 00 13 55.50 -31 08 52.5 Y 190
2022-09-03 21:44:28 C 00 13 55.64 -31 08 53.5 Y 190
2022-09-03 21:45:31 C 00 13 55.85 -31 08 53.9 Y 190
2022-09-03 21:46:35 C 00 13 56.00 -31 08 55.3 Y 190
2022-09-03 21:47:38 C 00 13 56.22 -31 08 56.4 Y 190
2022-09-03 21:48:42 C 00 13 56.37 -31 08 57.8 Y 190
2022-09-03 21:49:45 C 00 13 56.54 -31 08 58.3 Y 190
2022-09-03 21:50:49 C 00 13 56.70 -31 08 59.0 Y 190
2022-09-03 21:51:52 C 00 13 56.91 -31 09 00.1 Y 190
2022-09-05 19:27:01 C 00 22 52.14 -31 53 18.1 Y 190
2022-09-05 19:27:14 C 00 22 52.22 -31 53 18.5 Y 190
2022-09-05 19:27:27 C 00 22 52.27 -31 53 18.6 Y 190
2022-09-05 19:27:41 C 00 22 52.27 -31 53 18.2 Y 190
2022-09-05 19:27:54 C 00 22 52.28 -31 53 18.7 Y 190
2022-09-05 19:28:07 C 00 22 52.46 -31 53 18.4 Y 190
2022-09-05 19:28:20 C 00 22 52.39 -31 53 19.3 Y 190
2022-09-05 19:28:34 C 00 22 52.49 -31 53 18.8 Y 190
2022-09-05 19:28:47 C 00 22 52.49 -31 53 19.2 Y 190
2022-09-05 19:29:01 C 00 22 52.50 -31 53 19.7 Y 190
2022-09-05 19:29:14 C 00 22 52.54 -31 53 20.6 Y 190
2022-09-05 19:29:27 C 00 22 52.63 -31 53 20.6 Y 190
2022-09-05 19:29:40 C 00 22 52.69 -31 53 20.1 Y 190
2022-09-05 19:29:53 C 00 22 52.64 -31 53 21.0 Y 190
2022-09-05 19:30:06 C 00 22 52.71 -31 53 21.1 Y 190
2022-09-05 19:31:12 C 00 22 52.98 -31 53 22.8 Y 190
2022-09-05 19:31:36 C 00 22 53.03 -31 53 22.3 Y 190
2022-09-05 19:32:00 C 00 22 53.09 -31 53 23.5 Y 190
2022-09-05 19:32:22 C 00 22 53.16 -31 53 22.5 Y 190
2022-09-05 19:32:45 C 00 22 53.20 -31 53 23.7 Y 190
2022-09-05 19:33:09 C 00 22 53.29 -31 53 24.5 Y 190
2022-09-05 19:33:32 C 00 22 53.36 -31 53 25.1 Y 190
2022-09-05 19:33:55 C 00 22 53.41 -31 53 25.3 Y 190
2022-09-05 19:34:19 C 00 22 53.54 -31 53 25.2 Y 190
2022-09-05 19:34:42 C 00 22 53.61 -31 53 25.4 Y 190
2022-09-05 19:35:05 C 00 22 53.71 -31 53 26.0 Y 190
2022-09-05 19:35:29 C 00 22 53.73 -31 53 26.0 Y 190
2022-09-05 19:35:52 C 00 22 53.82 -31 53 27.0 Y 190
2022-09-05 19:36:15 C 00 22 53.85 -31 53 28.1 Y 190
2022-09-05 19:37:10 C 00 22 54.09 -31 53 28.0 Y 190
2022-09-05 19:37:43 C 00 22 54.18 -31 53 28.0 Y 190
2022-09-05 19:38:16 C 00 22 54.23 -31 53 29.5 Y 190
2022-09-05 19:38:50 C 00 22 54.38 -31 53 30.2 Y 190
2022-09-05 19:39:23 C 00 22 54.47 -31 53 31.6 Y 190
Radar Observations (9)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-11-14 09:00:00 48158516.71 0.2 us 8560 -14 -14
2003-11-15 05:30:00 48558999.72 0.2 us 8560 -14 -14
2003-11-23 03:26:00 60567637.54 0.1 us 2380 -1 -1
2003-11-24 03:17:00 62957533.66 0.1 us 2380 -1 -1
2003-11-26 04:19:00 68342975.29 0.1 us 2380 -1 -1
2022-09-28 11:00:00 73916934.998 1.5 us 8560 -14 -14
2022-09-30 11:20:00 72316200.402 1.5 us 8560 -14 -14
2022-10-07 11:20:00 71795431.959 1 us 8560 -14 -14
2022-10-08 12:50:00 72372078.703 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)